/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:22:59,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:22:59,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:22:59,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:22:59,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:22:59,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:22:59,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:22:59,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:22:59,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:22:59,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:22:59,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:22:59,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:22:59,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:22:59,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:22:59,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:22:59,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:22:59,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:22:59,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:22:59,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:22:59,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:22:59,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:22:59,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:22:59,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:22:59,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:22:59,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:22:59,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:22:59,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:22:59,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:22:59,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:22:59,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:22:59,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:22:59,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:22:59,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:22:59,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:22:59,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:22:59,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:22:59,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:22:59,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:22:59,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:22:59,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:22:59,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:22:59,800 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 15:22:59,849 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:22:59,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:22:59,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:22:59,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:22:59,853 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:22:59,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:22:59,854 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:22:59,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:22:59,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:22:59,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:22:59,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:22:59,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:22:59,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:22:59,856 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:22:59,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:22:59,856 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:22:59,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:22:59,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:22:59,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:22:59,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:22:59,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:22:59,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:22:59,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:22:59,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:22:59,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:22:59,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:22:59,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:22:59,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:22:59,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:22:59,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:23:00,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:23:00,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:23:00,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:23:00,315 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:23:00,316 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:23:00,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2020-10-28 15:23:00,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24e2dbba0/3bbab73ea29f463e962d079f8476908a/FLAG59a7b45e9 [2020-10-28 15:23:01,251 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:23:01,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2020-10-28 15:23:01,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24e2dbba0/3bbab73ea29f463e962d079f8476908a/FLAG59a7b45e9 [2020-10-28 15:23:01,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24e2dbba0/3bbab73ea29f463e962d079f8476908a [2020-10-28 15:23:01,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:23:01,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:23:01,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:23:01,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:23:01,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:23:01,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:23:01" (1/1) ... [2020-10-28 15:23:01,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69473d09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:23:01, skipping insertion in model container [2020-10-28 15:23:01,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:23:01" (1/1) ... [2020-10-28 15:23:01,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:23:01,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:23:01,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:23:01,973 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:23:02,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:23:02,181 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:23:02,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:23:02 WrapperNode [2020-10-28 15:23:02,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:23:02,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:23:02,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:23:02,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:23:02,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:23:02" (1/1) ... [2020-10-28 15:23:02,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:23:02" (1/1) ... [2020-10-28 15:23:02,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:23:02" (1/1) ... [2020-10-28 15:23:02,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:23:02" (1/1) ... [2020-10-28 15:23:02,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:23:02" (1/1) ... [2020-10-28 15:23:02,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:23:02" (1/1) ... [2020-10-28 15:23:02,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:23:02" (1/1) ... [2020-10-28 15:23:02,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:23:02,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:23:02,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:23:02,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:23:02,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:23:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:23:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:23:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:23:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:23:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-28 15:23:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-28 15:23:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2020-10-28 15:23:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2020-10-28 15:23:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2020-10-28 15:23:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2020-10-28 15:23:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2020-10-28 15:23:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2020-10-28 15:23:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2020-10-28 15:23:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2020-10-28 15:23:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2020-10-28 15:23:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2020-10-28 15:23:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2020-10-28 15:23:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2020-10-28 15:23:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2020-10-28 15:23:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2020-10-28 15:23:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2020-10-28 15:23:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2020-10-28 15:23:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2020-10-28 15:23:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-28 15:23:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:23:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-28 15:23:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-28 15:23:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-28 15:23:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-28 15:23:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-28 15:23:02,430 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-10-28 15:23:02,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-28 15:23:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:23:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:23:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:23:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:23:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 15:23:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 15:23:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-28 15:23:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2020-10-28 15:23:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2020-10-28 15:23:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2020-10-28 15:23:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2020-10-28 15:23:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2020-10-28 15:23:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2020-10-28 15:23:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2020-10-28 15:23:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2020-10-28 15:23:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2020-10-28 15:23:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2020-10-28 15:23:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2020-10-28 15:23:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2020-10-28 15:23:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2020-10-28 15:23:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2020-10-28 15:23:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2020-10-28 15:23:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-28 15:23:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-28 15:23:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-28 15:23:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-10-28 15:23:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-28 15:23:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-28 15:23:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-28 15:23:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-28 15:23:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2020-10-28 15:23:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2020-10-28 15:23:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-28 15:23:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:23:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-28 15:23:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:23:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:23:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:23:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:23:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:23:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:23:03,007 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:23:03,095 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2020-10-28 15:23:03,095 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2020-10-28 15:23:03,103 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:23:03,148 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2020-10-28 15:23:03,149 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2020-10-28 15:23:03,178 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:23:03,198 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-28 15:23:03,199 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-28 15:23:03,396 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:23:03,496 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2020-10-28 15:23:03,496 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2020-10-28 15:23:03,496 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2020-10-28 15:23:03,503 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:23:03,708 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2020-10-28 15:23:03,709 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2020-10-28 15:23:03,710 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:23:03,746 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-28 15:23:03,747 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-28 15:23:03,792 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:23:03,814 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-10-28 15:23:03,815 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-10-28 15:23:03,820 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:23:04,003 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2020-10-28 15:23:04,004 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2020-10-28 15:23:04,018 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-28 15:23:04,024 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-28 15:23:04,024 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-28 15:23:04,059 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:23:04,059 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 15:23:04,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:23:04 BoogieIcfgContainer [2020-10-28 15:23:04,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:23:04,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:23:04,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:23:04,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:23:04,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:23:01" (1/3) ... [2020-10-28 15:23:04,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dbb70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:23:04, skipping insertion in model container [2020-10-28 15:23:04,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:23:02" (2/3) ... [2020-10-28 15:23:04,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dbb70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:23:04, skipping insertion in model container [2020-10-28 15:23:04,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:23:04" (3/3) ... [2020-10-28 15:23:04,076 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-2.c [2020-10-28 15:23:04,089 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:23:04,096 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:23:04,110 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:23:04,161 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:23:04,162 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:23:04,163 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:23:04,163 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:23:04,163 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:23:04,164 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:23:04,164 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:23:04,164 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:23:04,205 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states. [2020-10-28 15:23:04,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 15:23:04,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:23:04,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:23:04,216 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:23:04,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:23:04,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1906802253, now seen corresponding path program 1 times [2020-10-28 15:23:04,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:23:04,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467200472] [2020-10-28 15:23:04,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:23:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:04,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:04,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:04,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 15:23:04,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:04,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-28 15:23:04,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:04,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:04,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:23:04,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:23:04,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:23:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 15:23:05,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:23:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:05,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:05,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:05,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:05,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:05,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 15:23:05,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:05,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:05,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:05,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:05,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:23:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:05,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:05,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:05,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:05,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 15:23:05,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:05,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:05,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:23:05,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:05,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:23:05,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:05,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:23:05,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467200472] [2020-10-28 15:23:05,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:23:05,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:23:05,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697614446] [2020-10-28 15:23:05,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:23:05,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:23:05,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:23:05,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:23:05,225 INFO L87 Difference]: Start difference. First operand 519 states. Second operand 5 states. [2020-10-28 15:23:09,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:23:09,367 INFO L93 Difference]: Finished difference Result 1048 states and 1681 transitions. [2020-10-28 15:23:09,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:23:09,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-28 15:23:09,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:23:09,391 INFO L225 Difference]: With dead ends: 1048 [2020-10-28 15:23:09,391 INFO L226 Difference]: Without dead ends: 664 [2020-10-28 15:23:09,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:23:09,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-10-28 15:23:09,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 508. [2020-10-28 15:23:09,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-10-28 15:23:09,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 738 transitions. [2020-10-28 15:23:09,572 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 738 transitions. Word has length 21 [2020-10-28 15:23:09,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:23:09,572 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 738 transitions. [2020-10-28 15:23:09,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:23:09,573 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 738 transitions. [2020-10-28 15:23:09,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 15:23:09,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:23:09,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:23:09,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:23:09,576 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:23:09,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:23:09,576 INFO L82 PathProgramCache]: Analyzing trace with hash 2058850355, now seen corresponding path program 1 times [2020-10-28 15:23:09,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:23:09,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759693769] [2020-10-28 15:23:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:23:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:09,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:09,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:09,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 15:23:09,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:09,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-28 15:23:09,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:09,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:09,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:23:09,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 15:23:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 15:23:09,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:10,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:23:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:10,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:10,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:10,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:10,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:10,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 15:23:10,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:10,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:10,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:10,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:23:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:10,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:10,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:10,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:10,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:10,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:23:10,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:10,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:10,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:10,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:23:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:10,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:10,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:10,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:10,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:23:10,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:10,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:23:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:23:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:23:10,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759693769] [2020-10-28 15:23:10,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:23:10,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:23:10,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930324918] [2020-10-28 15:23:10,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:23:10,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:23:10,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:23:10,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:23:10,203 INFO L87 Difference]: Start difference. First operand 508 states and 738 transitions. Second operand 6 states. [2020-10-28 15:23:14,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:23:14,848 INFO L93 Difference]: Finished difference Result 964 states and 1423 transitions. [2020-10-28 15:23:14,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:23:14,852 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-28 15:23:14,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:23:14,862 INFO L225 Difference]: With dead ends: 964 [2020-10-28 15:23:14,862 INFO L226 Difference]: Without dead ends: 844 [2020-10-28 15:23:14,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:23:14,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-10-28 15:23:15,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 663. [2020-10-28 15:23:15,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2020-10-28 15:23:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 962 transitions. [2020-10-28 15:23:15,018 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 962 transitions. Word has length 26 [2020-10-28 15:23:15,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:23:15,018 INFO L481 AbstractCegarLoop]: Abstraction has 663 states and 962 transitions. [2020-10-28 15:23:15,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:23:15,019 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 962 transitions. [2020-10-28 15:23:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 15:23:15,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:23:15,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:23:15,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:23:15,029 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:23:15,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:23:15,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1314336893, now seen corresponding path program 1 times [2020-10-28 15:23:15,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:23:15,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049673987] [2020-10-28 15:23:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:23:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:15,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:15,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:15,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 15:23:15,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:15,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-28 15:23:15,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:15,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:15,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:23:15,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 15:23:15,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 15:23:15,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:15,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:23:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:15,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:15,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:15,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:15,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:15,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:23:15,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:15,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:15,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:15,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:23:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:15,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:15,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:15,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:15,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:15,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:23:15,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:15,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:15,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:15,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:15,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:15,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:15,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:23:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:15,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:15,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:15,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:15,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:15,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:23:15,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:15,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:15,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:23:15,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:15,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:23:15,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:15,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:23:15,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049673987] [2020-10-28 15:23:15,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:23:15,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:23:15,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329284952] [2020-10-28 15:23:15,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:23:15,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:23:15,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:23:15,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:23:15,722 INFO L87 Difference]: Start difference. First operand 663 states and 962 transitions. Second operand 6 states. [2020-10-28 15:23:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:23:19,651 INFO L93 Difference]: Finished difference Result 1145 states and 1644 transitions. [2020-10-28 15:23:19,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:23:19,652 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-28 15:23:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:23:19,661 INFO L225 Difference]: With dead ends: 1145 [2020-10-28 15:23:19,661 INFO L226 Difference]: Without dead ends: 968 [2020-10-28 15:23:19,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:23:19,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-10-28 15:23:19,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 788. [2020-10-28 15:23:19,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 788 states. [2020-10-28 15:23:19,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1133 transitions. [2020-10-28 15:23:19,750 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1133 transitions. Word has length 31 [2020-10-28 15:23:19,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:23:19,750 INFO L481 AbstractCegarLoop]: Abstraction has 788 states and 1133 transitions. [2020-10-28 15:23:19,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:23:19,750 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1133 transitions. [2020-10-28 15:23:19,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 15:23:19,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:23:19,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:23:19,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:23:19,753 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:23:19,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:23:19,753 INFO L82 PathProgramCache]: Analyzing trace with hash -366706017, now seen corresponding path program 1 times [2020-10-28 15:23:19,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:23:19,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651431182] [2020-10-28 15:23:19,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:23:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:19,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:19,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:20,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:20,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 15:23:20,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:23:20,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-28 15:23:20,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:20,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:20,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:23:20,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 15:23:20,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:23:20,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:20,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:23:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:20,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:20,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:20,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:20,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:23:20,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:20,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:20,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:20,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:23:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:20,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:20,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:20,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:20,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:20,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:23:20,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:20,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:20,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:20,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:20,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:20,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:20,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:23:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:20,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:20,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:20,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:20,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:20,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:23:20,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:20,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:20,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:23:20,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651431182] [2020-10-28 15:23:20,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:23:20,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:23:20,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784342389] [2020-10-28 15:23:20,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:23:20,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:23:20,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:23:20,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:23:20,510 INFO L87 Difference]: Start difference. First operand 788 states and 1133 transitions. Second operand 6 states. [2020-10-28 15:23:20,941 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-28 15:23:26,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:23:26,002 INFO L93 Difference]: Finished difference Result 1627 states and 2443 transitions. [2020-10-28 15:23:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:23:26,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-28 15:23:26,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:23:26,019 INFO L225 Difference]: With dead ends: 1627 [2020-10-28 15:23:26,020 INFO L226 Difference]: Without dead ends: 1342 [2020-10-28 15:23:26,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:23:26,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2020-10-28 15:23:26,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 906. [2020-10-28 15:23:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-10-28 15:23:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1346 transitions. [2020-10-28 15:23:26,126 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1346 transitions. Word has length 32 [2020-10-28 15:23:26,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:23:26,126 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1346 transitions. [2020-10-28 15:23:26,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:23:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1346 transitions. [2020-10-28 15:23:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 15:23:26,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:23:26,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:23:26,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 15:23:26,129 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:23:26,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:23:26,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1578977761, now seen corresponding path program 1 times [2020-10-28 15:23:26,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:23:26,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163988649] [2020-10-28 15:23:26,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:23:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:26,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:26,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:26,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:26,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 15:23:26,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:23:26,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-28 15:23:26,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:26,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:26,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:23:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:23:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 15:23:26,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:26,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:23:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:26,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:26,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:26,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:26,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:26,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:23:26,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:26,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:26,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:26,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:26,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:26,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:26,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:23:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:26,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:26,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:26,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:26,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:23:26,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:26,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:23:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:23:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:26,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:23:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:26,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:26,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:26,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:26,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:26,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:23:26,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:26,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:26,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:23:26,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:23:26,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:23:27,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163988649] [2020-10-28 15:23:27,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:23:27,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 15:23:27,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308726668] [2020-10-28 15:23:27,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:23:27,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:23:27,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:23:27,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:23:27,012 INFO L87 Difference]: Start difference. First operand 906 states and 1346 transitions. Second operand 9 states. [2020-10-28 15:23:27,157 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-28 15:23:27,460 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-28 15:23:27,726 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-28 15:23:32,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:23:32,518 INFO L93 Difference]: Finished difference Result 1629 states and 2477 transitions. [2020-10-28 15:23:32,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:23:32,519 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-28 15:23:32,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:23:32,527 INFO L225 Difference]: With dead ends: 1629 [2020-10-28 15:23:32,527 INFO L226 Difference]: Without dead ends: 1044 [2020-10-28 15:23:32,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:23:32,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-10-28 15:23:32,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 834. [2020-10-28 15:23:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2020-10-28 15:23:32,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1201 transitions. [2020-10-28 15:23:32,634 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1201 transitions. Word has length 33 [2020-10-28 15:23:32,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:23:32,635 INFO L481 AbstractCegarLoop]: Abstraction has 834 states and 1201 transitions. [2020-10-28 15:23:32,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:23:32,635 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1201 transitions. [2020-10-28 15:23:32,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 15:23:32,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:23:32,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:23:32,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 15:23:32,638 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:23:32,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:23:32,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1307254387, now seen corresponding path program 1 times [2020-10-28 15:23:32,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:23:32,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642683619] [2020-10-28 15:23:32,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:23:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:32,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:32,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:32,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 15:23:32,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:32,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 15:23:32,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:32,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:23:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 15:23:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 15:23:32,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 15:23:32,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:23:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:32,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:32,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:32,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:32,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:32,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:23:32,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:32,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:32,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:32,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:33,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:23:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:33,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:33,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:33,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:33,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:33,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:23:33,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:33,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:33,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:33,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:23:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:33,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:33,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:33,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:33,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:33,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:23:33,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:33,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:33,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:33,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:23:33,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642683619] [2020-10-28 15:23:33,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:23:33,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:23:33,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943512551] [2020-10-28 15:23:33,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:23:33,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:23:33,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:23:33,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:23:33,095 INFO L87 Difference]: Start difference. First operand 834 states and 1201 transitions. Second operand 6 states. [2020-10-28 15:23:36,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:23:36,852 INFO L93 Difference]: Finished difference Result 965 states and 1424 transitions. [2020-10-28 15:23:36,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:23:36,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-28 15:23:36,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:23:36,866 INFO L225 Difference]: With dead ends: 965 [2020-10-28 15:23:36,866 INFO L226 Difference]: Without dead ends: 960 [2020-10-28 15:23:36,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:23:36,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2020-10-28 15:23:36,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 833. [2020-10-28 15:23:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-10-28 15:23:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1198 transitions. [2020-10-28 15:23:36,959 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1198 transitions. Word has length 37 [2020-10-28 15:23:36,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:23:36,960 INFO L481 AbstractCegarLoop]: Abstraction has 833 states and 1198 transitions. [2020-10-28 15:23:36,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:23:36,960 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1198 transitions. [2020-10-28 15:23:36,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 15:23:36,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:23:36,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:23:36,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 15:23:36,963 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:23:36,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:23:36,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1665857035, now seen corresponding path program 1 times [2020-10-28 15:23:36,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:23:36,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603557068] [2020-10-28 15:23:36,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:23:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:37,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:37,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:38,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:38,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 15:23:38,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:23:38,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-10-28 15:23:38,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:38,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:23:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 15:23:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:23:38,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:38,237 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 15:23:38,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:23:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:38,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:38,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:38,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:38,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:38,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:23:38,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:38,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:38,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:38,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:38,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:38,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:38,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:23:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:38,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:38,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:38,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:38,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:38,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:23:38,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:38,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:38,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:38,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:23:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:38,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:38,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:38,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:38,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:38,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:23:38,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:38,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:38,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:38,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:38,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:38,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:23:38,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603557068] [2020-10-28 15:23:38,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:23:38,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:23:38,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087683664] [2020-10-28 15:23:38,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:23:38,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:23:38,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:23:38,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:23:38,353 INFO L87 Difference]: Start difference. First operand 833 states and 1198 transitions. Second operand 6 states. [2020-10-28 15:23:38,989 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-28 15:23:42,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:23:42,443 INFO L93 Difference]: Finished difference Result 1339 states and 1922 transitions. [2020-10-28 15:23:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:23:42,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-28 15:23:42,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:23:42,451 INFO L225 Difference]: With dead ends: 1339 [2020-10-28 15:23:42,451 INFO L226 Difference]: Without dead ends: 1096 [2020-10-28 15:23:42,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:23:42,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2020-10-28 15:23:42,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 847. [2020-10-28 15:23:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-10-28 15:23:42,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1195 transitions. [2020-10-28 15:23:42,554 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1195 transitions. Word has length 40 [2020-10-28 15:23:42,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:23:42,554 INFO L481 AbstractCegarLoop]: Abstraction has 847 states and 1195 transitions. [2020-10-28 15:23:42,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:23:42,555 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1195 transitions. [2020-10-28 15:23:42,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 15:23:42,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:23:42,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:23:42,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 15:23:42,557 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:23:42,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:23:42,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1667420528, now seen corresponding path program 1 times [2020-10-28 15:23:42,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:23:42,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7727716] [2020-10-28 15:23:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:23:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:42,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:42,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:42,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 15:23:42,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:42,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-28 15:23:42,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:42,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:42,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 15:23:42,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 15:23:42,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 15:23:42,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:43,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:23:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:43,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:43,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:43,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:43,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:43,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:23:43,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:43,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:43,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:43,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:43,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:43,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:43,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:23:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:43,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:43,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:43,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:43,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:43,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:23:43,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:43,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:43,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:43,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:43,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:43,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:43,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:23:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:43,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:43,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:43,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:43,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 15:23:43,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:43,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:23:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:23:43,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:23:43,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7727716] [2020-10-28 15:23:43,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:23:43,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:23:43,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884035915] [2020-10-28 15:23:43,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:23:43,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:23:43,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:23:43,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:23:43,161 INFO L87 Difference]: Start difference. First operand 847 states and 1195 transitions. Second operand 6 states. [2020-10-28 15:23:43,293 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-28 15:23:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:23:45,990 INFO L93 Difference]: Finished difference Result 1080 states and 1561 transitions. [2020-10-28 15:23:45,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:23:45,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-28 15:23:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:23:45,997 INFO L225 Difference]: With dead ends: 1080 [2020-10-28 15:23:45,997 INFO L226 Difference]: Without dead ends: 1061 [2020-10-28 15:23:45,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:23:46,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2020-10-28 15:23:46,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 867. [2020-10-28 15:23:46,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-10-28 15:23:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1221 transitions. [2020-10-28 15:23:46,123 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1221 transitions. Word has length 41 [2020-10-28 15:23:46,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:23:46,123 INFO L481 AbstractCegarLoop]: Abstraction has 867 states and 1221 transitions. [2020-10-28 15:23:46,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:23:46,123 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1221 transitions. [2020-10-28 15:23:46,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 15:23:46,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:23:46,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:23:46,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 15:23:46,127 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:23:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:23:46,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1038992126, now seen corresponding path program 1 times [2020-10-28 15:23:46,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:23:46,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537211255] [2020-10-28 15:23:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:23:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:46,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:46,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:46,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:46,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 15:23:46,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:23:46,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-28 15:23:46,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:46,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:46,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:23:46,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 15:23:46,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 15:23:46,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:46,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:23:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:46,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:46,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:46,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:46,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:46,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 15:23:46,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:46,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:46,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:46,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:46,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:46,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:46,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:23:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:46,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:46,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:46,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:46,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:46,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:23:46,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:46,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:46,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:46,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:46,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:46,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:23:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:46,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:46,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:46,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:46,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:46,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:23:46,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:46,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:46,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:46,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:46,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:46,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:46,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 15:23:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:46,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:46,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:46,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:46,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:46,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:23:46,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:46,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:23:46,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:46,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:23:46,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537211255] [2020-10-28 15:23:46,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:23:46,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 15:23:46,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045291106] [2020-10-28 15:23:46,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:23:46,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:23:46,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:23:46,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:23:46,748 INFO L87 Difference]: Start difference. First operand 867 states and 1221 transitions. Second operand 7 states. [2020-10-28 15:23:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:23:50,954 INFO L93 Difference]: Finished difference Result 1248 states and 1796 transitions. [2020-10-28 15:23:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:23:50,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-10-28 15:23:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:23:50,963 INFO L225 Difference]: With dead ends: 1248 [2020-10-28 15:23:50,963 INFO L226 Difference]: Without dead ends: 1022 [2020-10-28 15:23:50,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:23:50,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2020-10-28 15:23:51,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 867. [2020-10-28 15:23:51,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-10-28 15:23:51,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1220 transitions. [2020-10-28 15:23:51,068 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1220 transitions. Word has length 47 [2020-10-28 15:23:51,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:23:51,068 INFO L481 AbstractCegarLoop]: Abstraction has 867 states and 1220 transitions. [2020-10-28 15:23:51,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:23:51,069 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1220 transitions. [2020-10-28 15:23:51,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 15:23:51,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:23:51,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:23:51,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 15:23:51,072 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:23:51,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:23:51,073 INFO L82 PathProgramCache]: Analyzing trace with hash 784413609, now seen corresponding path program 1 times [2020-10-28 15:23:51,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:23:51,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706271671] [2020-10-28 15:23:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:23:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:51,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:51,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:51,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:51,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:51,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 15:23:51,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:23:51,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-10-28 15:23:51,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:51,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:51,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:23:51,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 15:23:51,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:23:51,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:51,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:23:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:51,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:52,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:52,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:52,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:52,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:23:52,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:52,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:52,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:52,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:23:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:52,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:52,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:52,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:52,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:52,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:23:52,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:52,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:52,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:52,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:23:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:52,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:52,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:52,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:52,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:52,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:23:52,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:52,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:52,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:52,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:52,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 15:23:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:52,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:52,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:52,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 15:23:52,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:23:52,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:52,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:23:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 15:23:52,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:23:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:23:52,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706271671] [2020-10-28 15:23:52,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:23:52,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 15:23:52,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394821808] [2020-10-28 15:23:52,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:23:52,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:23:52,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:23:52,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:23:52,143 INFO L87 Difference]: Start difference. First operand 867 states and 1220 transitions. Second operand 8 states. [2020-10-28 15:23:53,101 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-28 15:23:57,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:23:57,327 INFO L93 Difference]: Finished difference Result 1112 states and 1591 transitions. [2020-10-28 15:23:57,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:23:57,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-10-28 15:23:57,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:23:57,333 INFO L225 Difference]: With dead ends: 1112 [2020-10-28 15:23:57,333 INFO L226 Difference]: Without dead ends: 891 [2020-10-28 15:23:57,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:23:57,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-10-28 15:23:57,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 735. [2020-10-28 15:23:57,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2020-10-28 15:23:57,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1029 transitions. [2020-10-28 15:23:57,430 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1029 transitions. Word has length 48 [2020-10-28 15:23:57,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:23:57,431 INFO L481 AbstractCegarLoop]: Abstraction has 735 states and 1029 transitions. [2020-10-28 15:23:57,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:23:57,431 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1029 transitions. [2020-10-28 15:23:57,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 15:23:57,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:23:57,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:23:57,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 15:23:57,434 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:23:57,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:23:57,434 INFO L82 PathProgramCache]: Analyzing trace with hash -38622429, now seen corresponding path program 1 times [2020-10-28 15:23:57,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:23:57,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701728905] [2020-10-28 15:23:57,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:23:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:57,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:57,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:57,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:57,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 15:23:57,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:23:57,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 15:23:57,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:57,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:57,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:23:57,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 15:23:57,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:23:57,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:57,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:23:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:57,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:57,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:57,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:57,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:57,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:23:57,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:57,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:57,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:57,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:57,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:57,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:57,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:23:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:57,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:57,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:57,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:57,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:57,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:23:57,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:57,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:57,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:57,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:23:57,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:23:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:57,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:57,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:57,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:57,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:57,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:23:57,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:57,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:57,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:57,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:23:57,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:57,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:57,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 15:23:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:23:57,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:23:57,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:23:57,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:23:57,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:23:57,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:23:57,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:23:57,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:23:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:23:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:23:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:23:57,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:23:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:23:57,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701728905] [2020-10-28 15:23:57,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:23:57,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 15:23:57,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543797352] [2020-10-28 15:23:57,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:23:57,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:23:57,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:23:57,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:23:57,896 INFO L87 Difference]: Start difference. First operand 735 states and 1029 transitions. Second operand 7 states. [2020-10-28 15:24:01,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:01,372 INFO L93 Difference]: Finished difference Result 978 states and 1399 transitions. [2020-10-28 15:24:01,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:24:01,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-10-28 15:24:01,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:01,378 INFO L225 Difference]: With dead ends: 978 [2020-10-28 15:24:01,378 INFO L226 Difference]: Without dead ends: 881 [2020-10-28 15:24:01,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:24:01,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-10-28 15:24:01,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 734. [2020-10-28 15:24:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-28 15:24:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1024 transitions. [2020-10-28 15:24:01,470 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1024 transitions. Word has length 48 [2020-10-28 15:24:01,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:01,471 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 1024 transitions. [2020-10-28 15:24:01,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:24:01,471 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1024 transitions. [2020-10-28 15:24:01,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 15:24:01,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:01,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:24:01,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 15:24:01,474 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:01,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:01,474 INFO L82 PathProgramCache]: Analyzing trace with hash 886924911, now seen corresponding path program 1 times [2020-10-28 15:24:01,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:01,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244029453] [2020-10-28 15:24:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:01,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:01,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:01,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:01,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 15:24:01,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:24:01,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 15:24:01,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:01,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 15:24:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 15:24:01,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:01,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:01,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:01,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:01,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:01,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:01,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:24:01,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:01,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:01,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:01,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:01,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:01,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:01,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:01,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:01,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:01,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:24:01,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:01,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:01,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:01,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:01,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:01,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:01,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:01,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:01,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:01,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:01,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:24:01,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:01,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:01,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:01,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:01,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:01,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:01,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:24:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:01,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:01,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:01,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 15:24:01,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:01,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 15:24:01,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:01,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:01,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 15:24:01,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:01,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:24:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:01,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:01,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:01,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 15:24:01,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:01,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:24:01,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:01,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:01,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:01,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:01,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:24:01,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:01,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:01,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244029453] [2020-10-28 15:24:01,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:01,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 15:24:01,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197526722] [2020-10-28 15:24:01,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:24:01,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:01,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:24:01,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:24:01,994 INFO L87 Difference]: Start difference. First operand 734 states and 1024 transitions. Second operand 7 states. [2020-10-28 15:24:06,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:06,521 INFO L93 Difference]: Finished difference Result 1045 states and 1497 transitions. [2020-10-28 15:24:06,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:24:06,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2020-10-28 15:24:06,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:06,528 INFO L225 Difference]: With dead ends: 1045 [2020-10-28 15:24:06,529 INFO L226 Difference]: Without dead ends: 1034 [2020-10-28 15:24:06,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:24:06,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-10-28 15:24:06,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 809. [2020-10-28 15:24:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 809 states. [2020-10-28 15:24:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1111 transitions. [2020-10-28 15:24:06,632 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1111 transitions. Word has length 49 [2020-10-28 15:24:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:06,633 INFO L481 AbstractCegarLoop]: Abstraction has 809 states and 1111 transitions. [2020-10-28 15:24:06,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:24:06,633 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1111 transitions. [2020-10-28 15:24:06,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 15:24:06,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:06,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:24:06,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 15:24:06,636 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:06,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:06,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1695824350, now seen corresponding path program 1 times [2020-10-28 15:24:06,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:06,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843291614] [2020-10-28 15:24:06,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:06,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:06,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:06,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:07,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:07,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 15:24:07,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:24:07,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1179 [2020-10-28 15:24:07,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:07,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:24:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:24:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 15:24:07,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:07,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:07,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:07,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:07,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:07,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:24:07,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:07,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:07,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:08,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:08,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:08,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:08,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:08,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:08,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:24:08,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:08,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:08,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:24:08,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:08,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:08,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:08,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:08,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:08,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:08,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:24:08,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:08,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:24:08,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:08,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:24:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:08,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:08,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:08,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 15:24:08,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:08,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 15:24:08,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:08,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:24:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 15:24:08,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:08,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:24:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:08,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:08,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:08,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 15:24:08,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:08,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:24:08,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:08,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:08,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:24:08,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:08,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:08,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843291614] [2020-10-28 15:24:08,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:08,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 15:24:08,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047450474] [2020-10-28 15:24:08,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:24:08,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:08,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:24:08,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:24:08,165 INFO L87 Difference]: Start difference. First operand 809 states and 1111 transitions. Second operand 9 states. [2020-10-28 15:24:10,431 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-10-28 15:24:10,958 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-28 15:24:14,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:14,070 INFO L93 Difference]: Finished difference Result 1052 states and 1502 transitions. [2020-10-28 15:24:14,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 15:24:14,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-10-28 15:24:14,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:14,078 INFO L225 Difference]: With dead ends: 1052 [2020-10-28 15:24:14,078 INFO L226 Difference]: Without dead ends: 1043 [2020-10-28 15:24:14,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-28 15:24:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-10-28 15:24:14,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 809. [2020-10-28 15:24:14,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 809 states. [2020-10-28 15:24:14,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1110 transitions. [2020-10-28 15:24:14,185 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1110 transitions. Word has length 50 [2020-10-28 15:24:14,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:14,185 INFO L481 AbstractCegarLoop]: Abstraction has 809 states and 1110 transitions. [2020-10-28 15:24:14,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:24:14,186 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1110 transitions. [2020-10-28 15:24:14,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 15:24:14,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:14,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:24:14,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 15:24:14,189 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:14,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:14,190 INFO L82 PathProgramCache]: Analyzing trace with hash 593137452, now seen corresponding path program 1 times [2020-10-28 15:24:14,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:14,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958461571] [2020-10-28 15:24:14,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:14,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:15,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:15,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 15:24:15,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:24:15,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-10-28 15:24:15,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:15,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:15,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:24:15,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:24:15,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 15:24:15,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:15,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:15,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:15,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:15,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:15,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:15,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:24:15,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:15,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:15,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:15,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:15,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:15,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:15,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:15,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:15,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:15,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:15,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:24:15,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:15,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:15,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:24:15,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:15,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:15,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:15,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:15,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:15,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:15,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:24:15,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:15,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:15,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:15,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:15,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:24:15,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:15,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:24:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:15,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:15,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:15,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 15:24:15,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:15,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 15:24:15,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:15,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:24:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 15:24:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 15:24:15,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:15,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:24:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:15,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:15,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:15,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 15:24:15,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:15,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 15:24:15,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:15,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:24:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 15:24:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 15:24:15,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:15,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958461571] [2020-10-28 15:24:15,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:15,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 15:24:15,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329606119] [2020-10-28 15:24:15,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:24:15,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:15,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:24:15,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:24:15,656 INFO L87 Difference]: Start difference. First operand 809 states and 1110 transitions. Second operand 12 states. [2020-10-28 15:24:15,905 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-10-28 15:24:16,068 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-28 15:24:16,454 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-28 15:24:16,732 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-28 15:24:21,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:21,715 INFO L93 Difference]: Finished difference Result 1088 states and 1529 transitions. [2020-10-28 15:24:21,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 15:24:21,716 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-28 15:24:21,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:21,722 INFO L225 Difference]: With dead ends: 1088 [2020-10-28 15:24:21,722 INFO L226 Difference]: Without dead ends: 1028 [2020-10-28 15:24:21,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-10-28 15:24:21,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2020-10-28 15:24:21,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 829. [2020-10-28 15:24:21,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 829 states. [2020-10-28 15:24:21,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1145 transitions. [2020-10-28 15:24:21,846 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1145 transitions. Word has length 51 [2020-10-28 15:24:21,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:21,847 INFO L481 AbstractCegarLoop]: Abstraction has 829 states and 1145 transitions. [2020-10-28 15:24:21,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:24:21,847 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1145 transitions. [2020-10-28 15:24:21,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 15:24:21,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:21,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:24:21,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 15:24:21,850 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:21,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:21,851 INFO L82 PathProgramCache]: Analyzing trace with hash -45024812, now seen corresponding path program 1 times [2020-10-28 15:24:21,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:21,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431790063] [2020-10-28 15:24:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:21,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:21,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:21,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 15:24:21,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:21,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 15:24:21,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:21,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:21,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:21,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 15:24:21,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 15:24:21,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:22,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:22,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:22,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:22,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:22,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:22,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:24:22,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:22,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:22,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:22,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:22,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:22,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:22,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:22,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:24:22,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:22,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:22,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:22,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:22,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:22,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:22,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:22,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:24:22,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:22,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:22,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:22,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:22,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:24:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:22,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:22,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:22,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:24:22,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 15:24:22,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:22,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 15:24:22,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:22,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:24:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:22,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:22,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:22,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:24:22,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:22,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:24:22,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:22,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:22,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 15:24:22,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:22,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:22,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431790063] [2020-10-28 15:24:22,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:22,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 15:24:22,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145055987] [2020-10-28 15:24:22,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:24:22,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:22,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:24:22,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:24:22,226 INFO L87 Difference]: Start difference. First operand 829 states and 1145 transitions. Second operand 7 states. [2020-10-28 15:24:22,381 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-28 15:24:26,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:26,861 INFO L93 Difference]: Finished difference Result 1139 states and 1611 transitions. [2020-10-28 15:24:26,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:24:26,862 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-28 15:24:26,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:26,868 INFO L225 Difference]: With dead ends: 1139 [2020-10-28 15:24:26,868 INFO L226 Difference]: Without dead ends: 1127 [2020-10-28 15:24:26,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:24:26,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2020-10-28 15:24:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 903. [2020-10-28 15:24:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2020-10-28 15:24:26,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1230 transitions. [2020-10-28 15:24:26,982 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1230 transitions. Word has length 51 [2020-10-28 15:24:26,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:26,982 INFO L481 AbstractCegarLoop]: Abstraction has 903 states and 1230 transitions. [2020-10-28 15:24:26,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:24:26,982 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1230 transitions. [2020-10-28 15:24:26,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 15:24:26,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:26,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:24:26,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 15:24:26,986 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:26,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:26,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1391409364, now seen corresponding path program 1 times [2020-10-28 15:24:26,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:26,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100823306] [2020-10-28 15:24:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:27,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:27,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:27,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 15:24:27,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:24:27,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-28 15:24:27,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:27,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:24:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 15:24:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 15:24:27,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:27,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:27,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:27,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:27,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:27,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:27,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:24:27,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:27,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:27,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:27,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:27,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:27,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:27,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:27,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:27,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:27,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:27,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:27,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:24:27,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:27,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:27,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:27,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:27,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:27,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 19 [2020-10-28 15:24:27,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:27,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:27,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:27,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:27,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:27,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:24:27,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:27,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:27,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:27,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:27,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:27,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:27,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:24:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:27,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:27,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:24:27,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:27,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 15:24:27,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:27,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:27,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:24:27,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:24:27,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 15:24:27,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:24:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:27,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:27,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:27,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:24:27,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:24:27,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:27,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:24:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 15:24:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 15:24:27,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:27,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100823306] [2020-10-28 15:24:27,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:27,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 15:24:27,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738346044] [2020-10-28 15:24:27,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:24:27,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:27,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:24:27,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:24:27,748 INFO L87 Difference]: Start difference. First operand 903 states and 1230 transitions. Second operand 8 states. [2020-10-28 15:24:28,510 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-28 15:24:28,879 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-28 15:24:32,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:32,061 INFO L93 Difference]: Finished difference Result 1062 states and 1490 transitions. [2020-10-28 15:24:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:24:32,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-28 15:24:32,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:32,071 INFO L225 Difference]: With dead ends: 1062 [2020-10-28 15:24:32,072 INFO L226 Difference]: Without dead ends: 1033 [2020-10-28 15:24:32,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:24:32,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2020-10-28 15:24:32,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 906. [2020-10-28 15:24:32,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-10-28 15:24:32,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1234 transitions. [2020-10-28 15:24:32,195 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1234 transitions. Word has length 51 [2020-10-28 15:24:32,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:32,195 INFO L481 AbstractCegarLoop]: Abstraction has 906 states and 1234 transitions. [2020-10-28 15:24:32,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:24:32,195 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1234 transitions. [2020-10-28 15:24:32,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 15:24:32,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:32,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:24:32,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 15:24:32,199 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:32,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:32,199 INFO L82 PathProgramCache]: Analyzing trace with hash -297534378, now seen corresponding path program 1 times [2020-10-28 15:24:32,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:32,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702124426] [2020-10-28 15:24:32,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:32,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:32,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:32,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 15:24:32,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:32,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 15:24:32,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:32,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:32,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:24:32,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:24:32,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 15:24:32,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:32,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:32,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:32,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:32,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:32,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:32,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:24:32,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:32,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:32,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:32,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:32,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:32,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:32,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:32,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:32,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:32,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:32,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:32,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:24:32,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:32,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:32,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:32,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:32,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:24:32,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:32,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:32,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:32,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:32,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:32,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:32,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:24:32,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:32,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:24:32,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:32,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:24:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:32,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:32,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:32,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:24:32,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:32,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 15:24:32,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:32,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:32,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:24:32,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 15:24:32,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 15:24:32,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:32,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:24:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:32,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:32,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:32,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:24:32,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:32,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 15:24:32,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:32,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:24:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 15:24:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 15:24:32,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:32,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702124426] [2020-10-28 15:24:32,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:32,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 15:24:32,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376367357] [2020-10-28 15:24:32,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:24:32,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:32,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:24:32,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:24:32,739 INFO L87 Difference]: Start difference. First operand 906 states and 1234 transitions. Second operand 12 states. [2020-10-28 15:24:32,983 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-10-28 15:24:33,148 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-28 15:24:33,523 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-28 15:24:36,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:36,925 INFO L93 Difference]: Finished difference Result 1067 states and 1494 transitions. [2020-10-28 15:24:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 15:24:36,926 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-28 15:24:36,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:36,932 INFO L225 Difference]: With dead ends: 1067 [2020-10-28 15:24:36,932 INFO L226 Difference]: Without dead ends: 1002 [2020-10-28 15:24:36,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 15:24:36,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2020-10-28 15:24:37,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 880. [2020-10-28 15:24:37,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-10-28 15:24:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1196 transitions. [2020-10-28 15:24:37,073 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1196 transitions. Word has length 51 [2020-10-28 15:24:37,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:37,073 INFO L481 AbstractCegarLoop]: Abstraction has 880 states and 1196 transitions. [2020-10-28 15:24:37,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:24:37,073 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1196 transitions. [2020-10-28 15:24:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 15:24:37,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:37,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:24:37,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 15:24:37,076 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:37,077 INFO L82 PathProgramCache]: Analyzing trace with hash -459808091, now seen corresponding path program 1 times [2020-10-28 15:24:37,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:37,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231497245] [2020-10-28 15:24:37,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:37,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:37,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:37,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:37,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 15:24:37,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:24:37,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-28 15:24:37,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:37,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:37,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:37,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 15:24:37,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 15:24:37,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:37,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:37,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:37,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:37,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:37,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:24:37,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:37,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:37,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:37,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:37,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:37,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:37,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:37,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:37,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:37,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:37,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:37,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:24:37,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:37,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:37,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:37,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:37,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:37,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:37,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:37,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:37,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:37,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:24:37,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:37,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:37,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:37,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:37,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:37,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:37,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:24:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:37,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:37,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:37,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:37,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 15:24:37,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:24:37,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 15:24:37,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:37,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:37,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 15:24:37,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:37,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:24:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:37,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:37,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:37,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:37,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 15:24:37,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:24:37,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 15:24:37,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:37,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:37,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 15:24:37,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:37,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:37,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:37,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:37,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:24:37,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:37,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:24:37,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:37,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:37,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:37,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:24:37,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:37,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231497245] [2020-10-28 15:24:37,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:37,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 15:24:37,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132239607] [2020-10-28 15:24:37,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:24:37,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:37,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:24:37,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:24:37,952 INFO L87 Difference]: Start difference. First operand 880 states and 1196 transitions. Second operand 9 states. [2020-10-28 15:24:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:42,459 INFO L93 Difference]: Finished difference Result 1027 states and 1439 transitions. [2020-10-28 15:24:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:24:42,459 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-28 15:24:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:42,464 INFO L225 Difference]: With dead ends: 1027 [2020-10-28 15:24:42,464 INFO L226 Difference]: Without dead ends: 1021 [2020-10-28 15:24:42,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:24:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-10-28 15:24:42,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 898. [2020-10-28 15:24:42,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-10-28 15:24:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1217 transitions. [2020-10-28 15:24:42,617 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1217 transitions. Word has length 53 [2020-10-28 15:24:42,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:42,618 INFO L481 AbstractCegarLoop]: Abstraction has 898 states and 1217 transitions. [2020-10-28 15:24:42,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:24:42,618 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1217 transitions. [2020-10-28 15:24:42,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 15:24:42,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:42,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:24:42,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 15:24:42,621 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:42,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1586257929, now seen corresponding path program 1 times [2020-10-28 15:24:42,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:42,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646491806] [2020-10-28 15:24:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:42,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:42,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:43,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:43,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 15:24:43,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:24:43,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-28 15:24:43,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:43,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:43,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:43,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-28 15:24:43,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:24:43,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:43,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:43,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:43,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:43,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:43,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:43,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:24:43,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:43,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:43,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:43,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:43,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:43,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:43,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:43,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:43,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:43,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:24:43,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:43,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:43,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:43,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:43,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:43,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:43,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:43,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:43,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:43,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:24:43,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:43,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:43,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:43,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:43,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 15:24:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:43,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:43,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:43,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 15:24:43,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:43,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:24:43,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:43,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:43,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:43,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:43,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:43,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:43,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 15:24:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:43,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:43,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:43,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:43,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:43,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:24:43,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:43,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:43,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:43,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:43,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:24:43,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:43,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646491806] [2020-10-28 15:24:43,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:43,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 15:24:43,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254615821] [2020-10-28 15:24:43,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:24:43,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:43,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:24:43,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:24:43,485 INFO L87 Difference]: Start difference. First operand 898 states and 1217 transitions. Second operand 8 states. [2020-10-28 15:24:48,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:48,016 INFO L93 Difference]: Finished difference Result 1232 states and 1718 transitions. [2020-10-28 15:24:48,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:24:48,020 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-10-28 15:24:48,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:48,026 INFO L225 Difference]: With dead ends: 1232 [2020-10-28 15:24:48,026 INFO L226 Difference]: Without dead ends: 990 [2020-10-28 15:24:48,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:24:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2020-10-28 15:24:48,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 870. [2020-10-28 15:24:48,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2020-10-28 15:24:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1180 transitions. [2020-10-28 15:24:48,142 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1180 transitions. Word has length 55 [2020-10-28 15:24:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:48,142 INFO L481 AbstractCegarLoop]: Abstraction has 870 states and 1180 transitions. [2020-10-28 15:24:48,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:24:48,142 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1180 transitions. [2020-10-28 15:24:48,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 15:24:48,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:48,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:24:48,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 15:24:48,146 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:48,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:48,147 INFO L82 PathProgramCache]: Analyzing trace with hash -521494691, now seen corresponding path program 1 times [2020-10-28 15:24:48,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:48,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391592969] [2020-10-28 15:24:48,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:48,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:48,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:48,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 15:24:48,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:48,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-28 15:24:48,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:48,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:48,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:24:48,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 15:24:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 15:24:48,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:48,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:48,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:48,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:48,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:48,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:48,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:24:48,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:48,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:48,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:48,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:48,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:48,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:48,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:48,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:48,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:48,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:48,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:24:48,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:48,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:48,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:48,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:48,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:48,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:48,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:48,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:48,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:48,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:48,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:48,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:24:48,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:48,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:48,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:48,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:48,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:48,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:24:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:48,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:48,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:48,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:24:48,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 15:24:48,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:48,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:24:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 15:24:48,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:48,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:24:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:48,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:48,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:48,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:24:48,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 15:24:48,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:48,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:24:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 15:24:48,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:48,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391592969] [2020-10-28 15:24:48,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:48,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 15:24:48,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524673655] [2020-10-28 15:24:48,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:24:48,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:48,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:24:48,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:24:48,719 INFO L87 Difference]: Start difference. First operand 870 states and 1180 transitions. Second operand 12 states. [2020-10-28 15:24:54,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:24:54,246 INFO L93 Difference]: Finished difference Result 1006 states and 1411 transitions. [2020-10-28 15:24:54,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 15:24:54,247 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-28 15:24:54,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:24:54,253 INFO L225 Difference]: With dead ends: 1006 [2020-10-28 15:24:54,253 INFO L226 Difference]: Without dead ends: 1001 [2020-10-28 15:24:54,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:24:54,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-10-28 15:24:54,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 877. [2020-10-28 15:24:54,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-10-28 15:24:54,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1189 transitions. [2020-10-28 15:24:54,360 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1189 transitions. Word has length 52 [2020-10-28 15:24:54,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:24:54,360 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1189 transitions. [2020-10-28 15:24:54,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:24:54,361 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1189 transitions. [2020-10-28 15:24:54,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 15:24:54,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:24:54,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:24:54,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 15:24:54,363 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:24:54,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:24:54,364 INFO L82 PathProgramCache]: Analyzing trace with hash -530076421, now seen corresponding path program 1 times [2020-10-28 15:24:54,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:24:54,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060359737] [2020-10-28 15:24:54,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:24:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:54,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:54,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:55,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:55,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 15:24:55,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:24:55,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-10-28 15:24:55,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:55,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:55,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:24:55,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:24:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 15:24:55,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:55,213 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 15:24:55,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:24:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:55,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:55,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:55,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:55,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:55,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:24:55,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:55,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:55,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:24:55,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:55,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:24:55,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:55,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:24:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:55,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:55,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:55,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:55,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:55,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:24:55,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:55,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:55,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:55,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:55,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:24:55,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:55,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:24:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:55,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:55,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:55,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:24:55,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:55,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:24:55,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:55,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:55,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:55,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:55,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:24:55,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:24:55,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 15:24:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:55,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:55,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:55,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:24:55,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:55,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 15:24:55,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:55,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:24:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 15:24:55,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:55,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:24:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:24:55,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:24:55,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:24:55,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 15:24:55,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:24:55,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:24:55,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:24:55,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:24:55,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:24:55,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:24:55,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 15:24:55,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:24:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:24:55,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060359737] [2020-10-28 15:24:55,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:24:55,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 15:24:55,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019856233] [2020-10-28 15:24:55,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:24:55,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:24:55,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:24:55,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:24:55,484 INFO L87 Difference]: Start difference. First operand 877 states and 1189 transitions. Second operand 9 states. [2020-10-28 15:24:55,667 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-28 15:24:55,828 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-28 15:24:57,871 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-10-28 15:25:01,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:01,034 INFO L93 Difference]: Finished difference Result 1011 states and 1415 transitions. [2020-10-28 15:25:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 15:25:01,034 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-28 15:25:01,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:01,041 INFO L225 Difference]: With dead ends: 1011 [2020-10-28 15:25:01,041 INFO L226 Difference]: Without dead ends: 973 [2020-10-28 15:25:01,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-28 15:25:01,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-10-28 15:25:01,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 848. [2020-10-28 15:25:01,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2020-10-28 15:25:01,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1154 transitions. [2020-10-28 15:25:01,168 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1154 transitions. Word has length 52 [2020-10-28 15:25:01,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:01,168 INFO L481 AbstractCegarLoop]: Abstraction has 848 states and 1154 transitions. [2020-10-28 15:25:01,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:25:01,168 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1154 transitions. [2020-10-28 15:25:01,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 15:25:01,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:01,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:25:01,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 15:25:01,172 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:01,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:01,172 INFO L82 PathProgramCache]: Analyzing trace with hash -840703104, now seen corresponding path program 1 times [2020-10-28 15:25:01,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:01,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760823006] [2020-10-28 15:25:01,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:01,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:01,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:01,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:01,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:01,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:03,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:03,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 15:25:03,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 15:25:03,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2592 [2020-10-28 15:25:03,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:03,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:25:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:25:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 15:25:03,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:03,941 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 15:25:03,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:03,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:03,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:03,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:03,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:03,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:25:03,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:03,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:03,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:03,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:03,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:03,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:25:04,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:04,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:04,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:04,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:04,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:04,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:25:04,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:04,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:04,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:04,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:04,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:25:04,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:25:04,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:04,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:04,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:04,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:04,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:04,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:25:04,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:04,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:04,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:04,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:04,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:25:04,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:04,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:25:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:04,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:04,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:04,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:04,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 15:25:04,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:25:04,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 15:25:04,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:04,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:04,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:04,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 15:25:04,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:04,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:25:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:04,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:04,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:04,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:04,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 15:25:04,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:25:04,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 15:25:04,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:04,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:04,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:04,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:04,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:04,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:25:04,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:04,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:04,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:04,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:04,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:04,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:04,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760823006] [2020-10-28 15:25:04,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:04,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 15:25:04,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959900112] [2020-10-28 15:25:04,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:25:04,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:04,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:25:04,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:25:04,288 INFO L87 Difference]: Start difference. First operand 848 states and 1154 transitions. Second operand 10 states. [2020-10-28 15:25:04,456 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-28 15:25:06,517 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-28 15:25:09,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:09,570 INFO L93 Difference]: Finished difference Result 1075 states and 1519 transitions. [2020-10-28 15:25:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 15:25:09,571 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-28 15:25:09,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:09,576 INFO L225 Difference]: With dead ends: 1075 [2020-10-28 15:25:09,577 INFO L226 Difference]: Without dead ends: 1068 [2020-10-28 15:25:09,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-28 15:25:09,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-10-28 15:25:09,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 846. [2020-10-28 15:25:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-10-28 15:25:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1150 transitions. [2020-10-28 15:25:09,724 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1150 transitions. Word has length 55 [2020-10-28 15:25:09,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:09,724 INFO L481 AbstractCegarLoop]: Abstraction has 846 states and 1150 transitions. [2020-10-28 15:25:09,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:25:09,725 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1150 transitions. [2020-10-28 15:25:09,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 15:25:09,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:09,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:25:09,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 15:25:09,728 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:09,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:09,728 INFO L82 PathProgramCache]: Analyzing trace with hash 793960577, now seen corresponding path program 1 times [2020-10-28 15:25:09,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:09,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959722422] [2020-10-28 15:25:09,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:09,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:09,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:10,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:10,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:10,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 15:25:10,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:25:10,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-10-28 15:25:10,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:10,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:25:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 15:25:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:25:10,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:10,603 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 15:25:10,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:10,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:10,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:10,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:10,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:25:10,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:10,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:10,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:10,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:10,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:10,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:10,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:10,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:10,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:10,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:10,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:10,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:10,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:10,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:10,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:10,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:10,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:10,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:10,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:10,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:10,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:10,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:10,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:10,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:25:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:10,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:10,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:10,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 15:25:10,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:10,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 15:25:10,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:10,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:25:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 15:25:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:25:10,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:10,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:25:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:10,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:10,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:10,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 15:25:10,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:10,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 15:25:10,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:10,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:10,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:25:10,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 15:25:10,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:25:10,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:10,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:10,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:10,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:10,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:25:10,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:10,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:10,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:10,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:10,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:10,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 15:25:10,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:10,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:10,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959722422] [2020-10-28 15:25:10,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:10,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 15:25:10,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107223150] [2020-10-28 15:25:10,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:25:10,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:10,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:25:10,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:25:10,889 INFO L87 Difference]: Start difference. First operand 846 states and 1150 transitions. Second operand 10 states. [2020-10-28 15:25:11,224 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-28 15:25:11,429 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-28 15:25:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:14,124 INFO L93 Difference]: Finished difference Result 1006 states and 1405 transitions. [2020-10-28 15:25:14,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:25:14,124 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-28 15:25:14,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:14,129 INFO L225 Difference]: With dead ends: 1006 [2020-10-28 15:25:14,130 INFO L226 Difference]: Without dead ends: 973 [2020-10-28 15:25:14,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:25:14,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-10-28 15:25:14,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 848. [2020-10-28 15:25:14,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2020-10-28 15:25:14,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1152 transitions. [2020-10-28 15:25:14,263 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1152 transitions. Word has length 56 [2020-10-28 15:25:14,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:14,263 INFO L481 AbstractCegarLoop]: Abstraction has 848 states and 1152 transitions. [2020-10-28 15:25:14,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:25:14,263 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1152 transitions. [2020-10-28 15:25:14,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 15:25:14,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:14,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:25:14,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 15:25:14,266 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:14,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:14,267 INFO L82 PathProgramCache]: Analyzing trace with hash -2114803325, now seen corresponding path program 1 times [2020-10-28 15:25:14,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:14,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673409581] [2020-10-28 15:25:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:14,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:14,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:14,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 15:25:14,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:14,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 15:25:14,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:14,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:14,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:25:14,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 15:25:14,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 15:25:14,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:14,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:14,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:14,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:14,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:14,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:14,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:25:14,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:14,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:14,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:14,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:14,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:14,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:14,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:14,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:14,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:14,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:14,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:14,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:14,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:14,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:14,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:14,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:14,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:14,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:14,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:14,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:14,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:14,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:14,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:14,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:14,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:14,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:14,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:25:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:14,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:14,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:14,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 15:25:14,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:14,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 15:25:14,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:14,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:25:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:14,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 15:25:14,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:14,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:25:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:14,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:14,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:14,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 15:25:14,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:14,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 15:25:14,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:14,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 15:25:14,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:15,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:15,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:15,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:15,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:25:15,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:15,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:15,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:15,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:15,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:15,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:15,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:15,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:15,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673409581] [2020-10-28 15:25:15,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:15,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-28 15:25:15,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659550316] [2020-10-28 15:25:15,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 15:25:15,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:15,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 15:25:15,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-28 15:25:15,057 INFO L87 Difference]: Start difference. First operand 848 states and 1152 transitions. Second operand 15 states. [2020-10-28 15:25:15,533 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-28 15:25:21,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:21,294 INFO L93 Difference]: Finished difference Result 1000 states and 1402 transitions. [2020-10-28 15:25:21,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 15:25:21,294 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-28 15:25:21,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:21,299 INFO L225 Difference]: With dead ends: 1000 [2020-10-28 15:25:21,299 INFO L226 Difference]: Without dead ends: 957 [2020-10-28 15:25:21,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-28 15:25:21,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2020-10-28 15:25:21,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 837. [2020-10-28 15:25:21,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-10-28 15:25:21,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1126 transitions. [2020-10-28 15:25:21,438 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1126 transitions. Word has length 56 [2020-10-28 15:25:21,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:21,438 INFO L481 AbstractCegarLoop]: Abstraction has 837 states and 1126 transitions. [2020-10-28 15:25:21,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 15:25:21,439 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1126 transitions. [2020-10-28 15:25:21,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 15:25:21,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:21,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:25:21,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 15:25:21,442 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:21,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:21,442 INFO L82 PathProgramCache]: Analyzing trace with hash 368156238, now seen corresponding path program 1 times [2020-10-28 15:25:21,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:21,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111663174] [2020-10-28 15:25:21,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:21,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:21,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 15:25:21,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:21,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-28 15:25:21,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:21,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 15:25:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 15:25:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 15:25:21,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:21,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:21,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:21,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:21,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:21,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:21,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:25:21,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:21,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:21,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:21,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:21,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:21,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:21,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:21,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:21,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:21,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:21,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:21,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:21,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:21,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:21,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:21,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:21,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:21,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:21,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:21,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:21,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:21,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:21,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:21,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:25:21,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:21,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:21,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:25:21,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 15:25:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:21,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:22,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:22,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 15:25:22,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:22,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 15:25:22,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:22,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:25:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:22,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 15:25:22,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:22,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 15:25:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:22,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:22,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:22,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 15:25:22,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:22,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 15:25:22,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:22,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:25:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 15:25:22,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:22,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:25:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:22,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:22,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:22,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 15:25:22,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:22,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:25:22,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:22,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:22,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 15:25:22,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:22,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111663174] [2020-10-28 15:25:22,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:22,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-28 15:25:22,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154527924] [2020-10-28 15:25:22,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 15:25:22,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:22,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 15:25:22,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-28 15:25:22,197 INFO L87 Difference]: Start difference. First operand 837 states and 1126 transitions. Second operand 15 states. [2020-10-28 15:25:26,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:26,919 INFO L93 Difference]: Finished difference Result 974 states and 1354 transitions. [2020-10-28 15:25:26,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 15:25:26,920 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-10-28 15:25:26,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:26,925 INFO L225 Difference]: With dead ends: 974 [2020-10-28 15:25:26,925 INFO L226 Difference]: Without dead ends: 955 [2020-10-28 15:25:26,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-28 15:25:26,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-10-28 15:25:27,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 835. [2020-10-28 15:25:27,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2020-10-28 15:25:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1122 transitions. [2020-10-28 15:25:27,043 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1122 transitions. Word has length 57 [2020-10-28 15:25:27,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:27,043 INFO L481 AbstractCegarLoop]: Abstraction has 835 states and 1122 transitions. [2020-10-28 15:25:27,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 15:25:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1122 transitions. [2020-10-28 15:25:27,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 15:25:27,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:27,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:25:27,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 15:25:27,046 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:27,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:27,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1687598629, now seen corresponding path program 1 times [2020-10-28 15:25:27,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:27,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878212393] [2020-10-28 15:25:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:27,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:27,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:27,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 15:25:27,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:27,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-28 15:25:27,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:27,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:27,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 15:25:27,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 15:25:27,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 15:25:27,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:27,419 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 15:25:27,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:27,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:27,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:27,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:27,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:25:27,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:27,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:27,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:27,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:27,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:27,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:27,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:27,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:27,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:27,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:27,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:27,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:27,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:27,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:27,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:27,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:27,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:27,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:27,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:27,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:27,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:27,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:27,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:27,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:27,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:27,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:27,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 15:25:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:27,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:27,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:27,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 15:25:27,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:27,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 15:25:27,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:27,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:25:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 15:25:27,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:27,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:25:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:27,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:27,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:27,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 15:25:27,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:27,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 15:25:27,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:27,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:25:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 15:25:27,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:27,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:25:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:27,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:27,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:27,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 15:25:27,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:27,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:25:27,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:27,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:27,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:27,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:27,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 15:25:27,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:27,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878212393] [2020-10-28 15:25:27,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:27,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-28 15:25:27,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411613467] [2020-10-28 15:25:27,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 15:25:27,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:27,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 15:25:27,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-28 15:25:27,772 INFO L87 Difference]: Start difference. First operand 835 states and 1122 transitions. Second operand 15 states. [2020-10-28 15:25:32,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:32,503 INFO L93 Difference]: Finished difference Result 969 states and 1347 transitions. [2020-10-28 15:25:32,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 15:25:32,504 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-28 15:25:32,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:32,518 INFO L225 Difference]: With dead ends: 969 [2020-10-28 15:25:32,518 INFO L226 Difference]: Without dead ends: 950 [2020-10-28 15:25:32,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-28 15:25:32,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-10-28 15:25:32,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 830. [2020-10-28 15:25:32,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 830 states. [2020-10-28 15:25:32,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1115 transitions. [2020-10-28 15:25:32,621 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1115 transitions. Word has length 56 [2020-10-28 15:25:32,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:32,622 INFO L481 AbstractCegarLoop]: Abstraction has 830 states and 1115 transitions. [2020-10-28 15:25:32,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 15:25:32,622 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1115 transitions. [2020-10-28 15:25:32,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-28 15:25:32,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:32,625 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:25:32,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 15:25:32,625 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:32,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:32,626 INFO L82 PathProgramCache]: Analyzing trace with hash 940514299, now seen corresponding path program 1 times [2020-10-28 15:25:32,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:32,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874448643] [2020-10-28 15:25:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:32,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:32,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:33,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:33,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:33,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 15:25:33,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:25:33,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1337 [2020-10-28 15:25:33,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:33,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:25:33,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:25:33,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 15:25:33,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:34,179 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 15:25:34,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:34,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:34,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:34,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:34,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:34,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:25:34,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:34,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:34,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:34,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:34,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:34,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:34,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:34,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:34,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:25:34,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:34,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:25:34,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:34,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:34,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:34,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:34,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:34,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:34,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:25:34,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:34,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:34,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:34,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:34,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:25:34,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:34,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 15:25:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:34,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:34,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:34,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 15:25:34,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:34,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:25:34,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:34,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:34,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 15:25:34,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:34,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 15:25:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:34,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:34,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:34,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:34,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 15:25:34,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:25:34,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 15:25:34,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:34,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:34,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:25:34,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:34,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 15:25:34,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:34,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 15:25:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:34,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:34,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:34,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 15:25:34,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:34,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:25:34,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:34,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:34,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:34,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:34,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:34,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:34,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 15:25:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:34,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:34,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:34,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:34,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:34,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:34,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:34,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:34,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:34,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:34,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:34,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:25:34,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:34,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874448643] [2020-10-28 15:25:34,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:25:34,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 15:25:34,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596062794] [2020-10-28 15:25:34,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:25:34,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:34,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:25:34,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:25:34,564 INFO L87 Difference]: Start difference. First operand 830 states and 1115 transitions. Second operand 12 states. [2020-10-28 15:25:34,830 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-28 15:25:37,133 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2020-10-28 15:25:39,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:39,359 INFO L93 Difference]: Finished difference Result 1223 states and 1701 transitions. [2020-10-28 15:25:39,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 15:25:39,360 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2020-10-28 15:25:39,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:39,366 INFO L225 Difference]: With dead ends: 1223 [2020-10-28 15:25:39,366 INFO L226 Difference]: Without dead ends: 1058 [2020-10-28 15:25:39,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-10-28 15:25:39,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2020-10-28 15:25:39,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 878. [2020-10-28 15:25:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-10-28 15:25:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1182 transitions. [2020-10-28 15:25:39,534 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1182 transitions. Word has length 75 [2020-10-28 15:25:39,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:39,534 INFO L481 AbstractCegarLoop]: Abstraction has 878 states and 1182 transitions. [2020-10-28 15:25:39,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:25:39,535 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1182 transitions. [2020-10-28 15:25:39,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 15:25:39,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:39,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:25:39,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 15:25:39,538 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:39,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:39,540 INFO L82 PathProgramCache]: Analyzing trace with hash -986766060, now seen corresponding path program 1 times [2020-10-28 15:25:39,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:39,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016456879] [2020-10-28 15:25:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:39,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:39,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:39,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:40,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:40,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 15:25:40,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:25:40,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1247 [2020-10-28 15:25:40,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:40,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:40,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:40,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 15:25:40,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:40,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:40,962 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 15:25:40,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:40,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:40,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:40,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:40,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:40,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:25:40,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:40,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:40,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:40,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:40,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:40,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:41,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:41,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:41,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:41,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:41,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:41,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:25:41,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:41,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:41,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:41,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:41,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:41,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:41,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:41,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:41,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:41,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:41,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:41,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:41,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:41,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:41,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:41,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:41,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:41,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:25:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:41,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:41,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:41,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 15:25:41,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:41,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 15:25:41,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:41,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:41,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:41,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 15:25:41,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:41,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:41,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:25:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:41,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:41,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:41,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 15:25:41,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:41,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 15:25:41,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:41,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 15:25:41,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:41,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:41,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 15:25:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:41,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:41,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:41,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 15:25:41,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 15:25:41,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:41,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 15:25:41,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 15:25:41,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:41,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:25:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:41,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:41,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:41,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:25:41,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:41,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:41,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:41,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:41,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:41,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:41,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:41,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:41,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016456879] [2020-10-28 15:25:41,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:41,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 15:25:41,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915805817] [2020-10-28 15:25:41,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:25:41,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:41,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:25:41,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:25:41,369 INFO L87 Difference]: Start difference. First operand 878 states and 1182 transitions. Second operand 12 states. [2020-10-28 15:25:41,837 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-28 15:25:42,056 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-28 15:25:42,182 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-28 15:25:45,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:45,478 INFO L93 Difference]: Finished difference Result 1034 states and 1440 transitions. [2020-10-28 15:25:45,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 15:25:45,479 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-28 15:25:45,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:45,483 INFO L225 Difference]: With dead ends: 1034 [2020-10-28 15:25:45,483 INFO L226 Difference]: Without dead ends: 1005 [2020-10-28 15:25:45,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-28 15:25:45,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2020-10-28 15:25:45,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 883. [2020-10-28 15:25:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-10-28 15:25:45,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1191 transitions. [2020-10-28 15:25:45,618 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1191 transitions. Word has length 63 [2020-10-28 15:25:45,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:45,619 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1191 transitions. [2020-10-28 15:25:45,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:25:45,619 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1191 transitions. [2020-10-28 15:25:45,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 15:25:45,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:45,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:25:45,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 15:25:45,622 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:45,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:45,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1418231997, now seen corresponding path program 1 times [2020-10-28 15:25:45,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:45,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613664750] [2020-10-28 15:25:45,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:45,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:45,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:45,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:46,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:46,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 15:25:46,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:25:46,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 889 [2020-10-28 15:25:46,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:46,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 15:25:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:46,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:46,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:46,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:46,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:46,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:46,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:25:46,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:46,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:46,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:46,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:46,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:46,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:46,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:46,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:46,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:46,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:46,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:46,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:25:46,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:46,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:46,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:46,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:46,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:46,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:46,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:46,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:46,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:46,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:46,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:46,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:46,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:46,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:46,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:46,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:46,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:46,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:46,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:25:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:46,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:46,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:46,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 15:25:46,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:46,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 15:25:46,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:46,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:46,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:46,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 15:25:46,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:46,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:46,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:25:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:46,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:46,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:46,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 15:25:46,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:46,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 15:25:46,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:46,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:25:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:46,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:46,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 15:25:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:46,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:46,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:46,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 15:25:46,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:46,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 15:25:46,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:46,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:46,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:46,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 15:25:46,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 15:25:46,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:47,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:25:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:47,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:47,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:47,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:25:47,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:47,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:47,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:47,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:47,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:25:47,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:47,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613664750] [2020-10-28 15:25:47,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:47,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 15:25:47,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195583095] [2020-10-28 15:25:47,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:25:47,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:47,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:25:47,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:25:47,024 INFO L87 Difference]: Start difference. First operand 883 states and 1191 transitions. Second operand 12 states. [2020-10-28 15:25:47,353 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-28 15:25:47,609 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-28 15:25:47,829 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-28 15:25:50,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:50,726 INFO L93 Difference]: Finished difference Result 1035 states and 1440 transitions. [2020-10-28 15:25:50,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 15:25:50,727 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-10-28 15:25:50,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:50,730 INFO L225 Difference]: With dead ends: 1035 [2020-10-28 15:25:50,730 INFO L226 Difference]: Without dead ends: 1008 [2020-10-28 15:25:50,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-28 15:25:50,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2020-10-28 15:25:50,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 884. [2020-10-28 15:25:50,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-10-28 15:25:50,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1193 transitions. [2020-10-28 15:25:50,878 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1193 transitions. Word has length 60 [2020-10-28 15:25:50,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:50,878 INFO L481 AbstractCegarLoop]: Abstraction has 884 states and 1193 transitions. [2020-10-28 15:25:50,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:25:50,878 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1193 transitions. [2020-10-28 15:25:50,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 15:25:50,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:50,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:25:50,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 15:25:50,882 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:50,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:50,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1215086461, now seen corresponding path program 1 times [2020-10-28 15:25:50,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:50,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482281698] [2020-10-28 15:25:50,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:50,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:50,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:51,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:51,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:51,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 15:25:51,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:25:51,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 963 [2020-10-28 15:25:51,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:51,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 15:25:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:51,989 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 15:25:51,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:51,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:51,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:51,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:51,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:51,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:25:51,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:51,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:51,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:52,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:52,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:52,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:52,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:52,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:52,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:52,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:52,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:52,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:52,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:52,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:52,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:52,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:52,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:52,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:52,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:52,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:52,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:52,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:25:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:52,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:52,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:52,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 15:25:52,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:52,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 15:25:52,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:52,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:52,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:52,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 15:25:52,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:52,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:52,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:25:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:52,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:52,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:52,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 15:25:52,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:52,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 15:25:52,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:52,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:52,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:52,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 15:25:52,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:52,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:52,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 15:25:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:52,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:52,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:52,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 15:25:52,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:52,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:25:52,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:52,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:52,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:52,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 15:25:52,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 15:25:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:52,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:25:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:52,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:52,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:52,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:25:52,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:52,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:52,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:52,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:52,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:52,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:52,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482281698] [2020-10-28 15:25:52,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:52,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 15:25:52,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733267515] [2020-10-28 15:25:52,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:25:52,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:52,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:25:52,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:25:52,371 INFO L87 Difference]: Start difference. First operand 884 states and 1193 transitions. Second operand 12 states. [2020-10-28 15:25:52,851 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-28 15:25:53,078 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-28 15:25:53,207 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-28 15:25:56,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:25:56,199 INFO L93 Difference]: Finished difference Result 1036 states and 1441 transitions. [2020-10-28 15:25:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 15:25:56,200 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-28 15:25:56,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:25:56,204 INFO L225 Difference]: With dead ends: 1036 [2020-10-28 15:25:56,204 INFO L226 Difference]: Without dead ends: 1009 [2020-10-28 15:25:56,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-28 15:25:56,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-28 15:25:56,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 884. [2020-10-28 15:25:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-10-28 15:25:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1193 transitions. [2020-10-28 15:25:56,349 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1193 transitions. Word has length 63 [2020-10-28 15:25:56,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:25:56,350 INFO L481 AbstractCegarLoop]: Abstraction has 884 states and 1193 transitions. [2020-10-28 15:25:56,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:25:56,350 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1193 transitions. [2020-10-28 15:25:56,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 15:25:56,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:25:56,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:25:56,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 15:25:56,353 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:25:56,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:25:56,353 INFO L82 PathProgramCache]: Analyzing trace with hash 483126310, now seen corresponding path program 1 times [2020-10-28 15:25:56,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:25:56,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296928348] [2020-10-28 15:25:56,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:25:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:56,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:56,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:57,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:58,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:58,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 15:25:58,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:25:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1794 [2020-10-28 15:25:58,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:58,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 15:25:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:58,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:58,290 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 15:25:58,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:25:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:58,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:58,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:58,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:58,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:25:58,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:58,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:58,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:25:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:58,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:58,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:58,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:58,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:58,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:58,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:58,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:58,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:58,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:58,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:58,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:58,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:25:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:58,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:58,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:58,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:25:58,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:58,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:58,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:58,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:58,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:58,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:25:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:58,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:58,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:58,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:58,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 15:25:58,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:25:58,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-28 15:25:58,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:58,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 15:25:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:58,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:58,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:25:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:58,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:58,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:58,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:58,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 15:25:58,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:25:58,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-28 15:25:58,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:58,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:58,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:58,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:25:58,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:58,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:58,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:25:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:58,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:58,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:58,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:25:58,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:58,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:25:58,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:58,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:25:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:25:58,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:58,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:25:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:58,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:58,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:58,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 15:25:58,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:58,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:25:58,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:58,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:25:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 15:25:58,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 15:25:58,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:59,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:25:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:25:59,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:25:59,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:25:59,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:25:59,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:25:59,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:25:59,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:25:59,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:25:59,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:25:59,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:25:59,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:25:59,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:25:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:25:59,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296928348] [2020-10-28 15:25:59,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:25:59,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 15:25:59,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004913878] [2020-10-28 15:25:59,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 15:25:59,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:25:59,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 15:25:59,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:25:59,028 INFO L87 Difference]: Start difference. First operand 884 states and 1193 transitions. Second operand 13 states. [2020-10-28 15:25:59,513 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-28 15:25:59,738 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-28 15:26:00,171 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-28 15:26:03,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:03,681 INFO L93 Difference]: Finished difference Result 1037 states and 1444 transitions. [2020-10-28 15:26:03,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 15:26:03,681 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-28 15:26:03,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:03,686 INFO L225 Difference]: With dead ends: 1037 [2020-10-28 15:26:03,686 INFO L226 Difference]: Without dead ends: 1010 [2020-10-28 15:26:03,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2020-10-28 15:26:03,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-28 15:26:03,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 884. [2020-10-28 15:26:03,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-10-28 15:26:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1193 transitions. [2020-10-28 15:26:03,803 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1193 transitions. Word has length 65 [2020-10-28 15:26:03,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:03,803 INFO L481 AbstractCegarLoop]: Abstraction has 884 states and 1193 transitions. [2020-10-28 15:26:03,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 15:26:03,803 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1193 transitions. [2020-10-28 15:26:03,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 15:26:03,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:03,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:03,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 15:26:03,806 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:03,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:03,806 INFO L82 PathProgramCache]: Analyzing trace with hash -712006446, now seen corresponding path program 1 times [2020-10-28 15:26:03,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:03,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267673299] [2020-10-28 15:26:03,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:03,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:04,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:04,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 15:26:04,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:04,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-28 15:26:04,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:04,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:04,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 15:26:04,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 15:26:04,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 15:26:04,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:04,386 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 15:26:04,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:04,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:04,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:04,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:04,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:04,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:26:04,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:04,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:04,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:04,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:04,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:04,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:04,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:04,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:04,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:04,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:04,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:04,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:04,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:04,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:04,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:04,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:04,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:04,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:04,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:04,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:04,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:04,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:04,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:04,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:04,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:04,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:04,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:26:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:04,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:04,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:04,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 15:26:04,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:04,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 15:26:04,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:04,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:04,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 15:26:04,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:04,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 15:26:04,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:04,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:26:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:04,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:04,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:04,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 15:26:04,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:04,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 15:26:04,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:04,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:26:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 15:26:04,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:04,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 15:26:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:04,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:04,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:04,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 15:26:04,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:04,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 15:26:04,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:04,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:26:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 15:26:04,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:04,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:26:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:04,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:04,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:04,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:26:04,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:04,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:04,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:26:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:04,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267673299] [2020-10-28 15:26:04,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:04,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-28 15:26:04,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271764422] [2020-10-28 15:26:04,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 15:26:04,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:04,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 15:26:04,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-28 15:26:04,984 INFO L87 Difference]: Start difference. First operand 884 states and 1193 transitions. Second operand 19 states. [2020-10-28 15:26:05,753 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-28 15:26:06,079 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-28 15:26:11,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:11,183 INFO L93 Difference]: Finished difference Result 1030 states and 1434 transitions. [2020-10-28 15:26:11,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 15:26:11,184 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-10-28 15:26:11,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:11,189 INFO L225 Difference]: With dead ends: 1030 [2020-10-28 15:26:11,189 INFO L226 Difference]: Without dead ends: 1005 [2020-10-28 15:26:11,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-10-28 15:26:11,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2020-10-28 15:26:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 882. [2020-10-28 15:26:11,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 882 states. [2020-10-28 15:26:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1189 transitions. [2020-10-28 15:26:11,316 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1189 transitions. Word has length 63 [2020-10-28 15:26:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:11,317 INFO L481 AbstractCegarLoop]: Abstraction has 882 states and 1189 transitions. [2020-10-28 15:26:11,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 15:26:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1189 transitions. [2020-10-28 15:26:11,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 15:26:11,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:11,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:11,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 15:26:11,320 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:11,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:11,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1692991611, now seen corresponding path program 1 times [2020-10-28 15:26:11,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:11,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702941196] [2020-10-28 15:26:11,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:11,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:11,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:11,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 15:26:11,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:11,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-28 15:26:11,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:11,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:11,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 15:26:11,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 15:26:11,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 15:26:11,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:11,775 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 15:26:11,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:11,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:11,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:11,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:11,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:11,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:26:11,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:11,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:11,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:11,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:11,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:11,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:11,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:11,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:11,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:11,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:11,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:11,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:11,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:11,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:11,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:11,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:11,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:11,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:11,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:11,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:11,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:11,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:11,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:26:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:11,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:12,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:12,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 15:26:12,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:12,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 15:26:12,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:12,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:12,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 15:26:12,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:12,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 15:26:12,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:12,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:26:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:12,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:12,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:12,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 15:26:12,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:12,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 15:26:12,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:12,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:12,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:26:12,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:12,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 15:26:12,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:12,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 15:26:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:12,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:12,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:12,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 15:26:12,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:12,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 15:26:12,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:12,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:12,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:26:12,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:12,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 15:26:12,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:12,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:26:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:12,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:12,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:12,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:26:12,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:12,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:12,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:12,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:12,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:12,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:12,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:26:12,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:12,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702941196] [2020-10-28 15:26:12,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:12,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-28 15:26:12,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450867148] [2020-10-28 15:26:12,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 15:26:12,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:12,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 15:26:12,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-28 15:26:12,354 INFO L87 Difference]: Start difference. First operand 882 states and 1189 transitions. Second operand 19 states. [2020-10-28 15:26:12,869 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-28 15:26:13,264 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-28 15:26:18,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:18,866 INFO L93 Difference]: Finished difference Result 1030 states and 1434 transitions. [2020-10-28 15:26:18,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 15:26:18,866 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2020-10-28 15:26:18,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:18,871 INFO L225 Difference]: With dead ends: 1030 [2020-10-28 15:26:18,871 INFO L226 Difference]: Without dead ends: 1002 [2020-10-28 15:26:18,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-10-28 15:26:18,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2020-10-28 15:26:18,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 880. [2020-10-28 15:26:18,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-10-28 15:26:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1176 transitions. [2020-10-28 15:26:18,968 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1176 transitions. Word has length 60 [2020-10-28 15:26:18,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:18,969 INFO L481 AbstractCegarLoop]: Abstraction has 880 states and 1176 transitions. [2020-10-28 15:26:18,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 15:26:18,969 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1176 transitions. [2020-10-28 15:26:18,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 15:26:18,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:18,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:18,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 15:26:18,972 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:18,972 INFO L82 PathProgramCache]: Analyzing trace with hash 123679114, now seen corresponding path program 1 times [2020-10-28 15:26:18,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:18,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116767805] [2020-10-28 15:26:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:19,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:19,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:19,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 15:26:19,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:19,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 15:26:19,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:19,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:19,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 15:26:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 15:26:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 15:26:19,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:19,328 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 15:26:19,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:19,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:19,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:19,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:19,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:26:19,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:19,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:19,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:19,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:19,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:19,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:19,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:19,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:19,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:19,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:19,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:19,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:19,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:19,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:19,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:19,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:19,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:19,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:19,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:19,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:19,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:19,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:19,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:19,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:19,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:19,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:26:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:19,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:19,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:19,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 15:26:19,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:19,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 15:26:19,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:19,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 15:26:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 15:26:19,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:19,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:19,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:19,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:19,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 15:26:19,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:19,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 15:26:19,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:19,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:26:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 15:26:19,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:19,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:26:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:19,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:19,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 15:26:19,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:19,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:26:19,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:19,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:26:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 15:26:19,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:19,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:19,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116767805] [2020-10-28 15:26:19,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:19,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-28 15:26:19,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389717119] [2020-10-28 15:26:19,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 15:26:19,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:19,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 15:26:19,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-28 15:26:19,717 INFO L87 Difference]: Start difference. First operand 880 states and 1176 transitions. Second operand 16 states. [2020-10-28 15:26:25,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:25,934 INFO L93 Difference]: Finished difference Result 1018 states and 1405 transitions. [2020-10-28 15:26:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 15:26:25,935 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2020-10-28 15:26:25,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:25,938 INFO L225 Difference]: With dead ends: 1018 [2020-10-28 15:26:25,938 INFO L226 Difference]: Without dead ends: 997 [2020-10-28 15:26:25,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-28 15:26:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-10-28 15:26:26,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 877. [2020-10-28 15:26:26,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-10-28 15:26:26,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1171 transitions. [2020-10-28 15:26:26,046 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1171 transitions. Word has length 59 [2020-10-28 15:26:26,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:26,046 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1171 transitions. [2020-10-28 15:26:26,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 15:26:26,046 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1171 transitions. [2020-10-28 15:26:26,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 15:26:26,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:26,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:26,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 15:26:26,049 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:26,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:26,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1025774681, now seen corresponding path program 1 times [2020-10-28 15:26:26,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:26,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790898021] [2020-10-28 15:26:26,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:26,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:26,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:26,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:26,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 15:26:26,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:26:26,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-28 15:26:26,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:26,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 15:26:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:26:26,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:26,413 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 15:26:26,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:26,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:26,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:26,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:26,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:26:26,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:26,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:26,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:26,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:26,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:26,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:26,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:26,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:26,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:26,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:26,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:26,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:26,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:26,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:26,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:26,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:26,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:26,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:26,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:26,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:26,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:26,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:26,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:26,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:26:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:26,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:26,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:26,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 15:26:26,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:26,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 15:26:26,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:26,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:26,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:26,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 15:26:26,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:26:26,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:26,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:26:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:26,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:26,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:26,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:26:26,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:26,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 15:26:26,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:26,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 15:26:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:26:26,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:26,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 15:26:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:26,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:26,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:26:26,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:26,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:26,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 15:26:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:26,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:26,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790898021] [2020-10-28 15:26:26,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:26,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 15:26:26,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277195815] [2020-10-28 15:26:26,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:26:26,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:26,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:26:26,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:26:26,658 INFO L87 Difference]: Start difference. First operand 877 states and 1171 transitions. Second operand 9 states. [2020-10-28 15:26:27,284 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-28 15:26:30,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:30,166 INFO L93 Difference]: Finished difference Result 1032 states and 1416 transitions. [2020-10-28 15:26:30,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:26:30,166 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-28 15:26:30,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:30,171 INFO L225 Difference]: With dead ends: 1032 [2020-10-28 15:26:30,171 INFO L226 Difference]: Without dead ends: 999 [2020-10-28 15:26:30,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:26:30,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-10-28 15:26:30,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 877. [2020-10-28 15:26:30,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-10-28 15:26:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1170 transitions. [2020-10-28 15:26:30,267 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1170 transitions. Word has length 60 [2020-10-28 15:26:30,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:30,267 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1170 transitions. [2020-10-28 15:26:30,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:26:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1170 transitions. [2020-10-28 15:26:30,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 15:26:30,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:30,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:30,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 15:26:30,269 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:30,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:30,269 INFO L82 PathProgramCache]: Analyzing trace with hash 360428713, now seen corresponding path program 1 times [2020-10-28 15:26:30,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:30,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800683715] [2020-10-28 15:26:30,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:30,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:30,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 15:26:30,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:30,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 15:26:30,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:30,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:26:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 15:26:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 15:26:30,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:30,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:30,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:30,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:30,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:30,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:30,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:26:30,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:30,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:30,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:30,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:30,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:30,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:30,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:30,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:30,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:30,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:30,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:30,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:30,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:30,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:30,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:30,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:30,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:30,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:30,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:30,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:30,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:30,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:30,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:30,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:30,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:26:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:30,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:30,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:30,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 15:26:30,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:30,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 15:26:30,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:30,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:26:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 15:26:30,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:30,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 15:26:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:30,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:31,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:31,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:26:31,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:31,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 15:26:31,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:31,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:31,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:26:31,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:31,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 15:26:31,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:31,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 15:26:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:31,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:31,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:31,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:26:31,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:31,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:31,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:31,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:31,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:26:31,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:31,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:26:31,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:26:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:31,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800683715] [2020-10-28 15:26:31,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:31,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-28 15:26:31,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888241995] [2020-10-28 15:26:31,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 15:26:31,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:31,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 15:26:31,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-28 15:26:31,094 INFO L87 Difference]: Start difference. First operand 877 states and 1170 transitions. Second operand 15 states. [2020-10-28 15:26:32,135 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-28 15:26:35,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:26:35,884 INFO L93 Difference]: Finished difference Result 1020 states and 1404 transitions. [2020-10-28 15:26:35,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 15:26:35,885 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-28 15:26:35,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:26:35,889 INFO L225 Difference]: With dead ends: 1020 [2020-10-28 15:26:35,889 INFO L226 Difference]: Without dead ends: 982 [2020-10-28 15:26:35,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-28 15:26:35,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-10-28 15:26:35,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 865. [2020-10-28 15:26:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2020-10-28 15:26:35,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1150 transitions. [2020-10-28 15:26:35,981 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1150 transitions. Word has length 60 [2020-10-28 15:26:35,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:26:35,981 INFO L481 AbstractCegarLoop]: Abstraction has 865 states and 1150 transitions. [2020-10-28 15:26:35,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 15:26:35,981 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1150 transitions. [2020-10-28 15:26:35,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 15:26:35,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:26:35,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:26:35,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 15:26:35,983 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:26:35,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:26:35,983 INFO L82 PathProgramCache]: Analyzing trace with hash 444977214, now seen corresponding path program 1 times [2020-10-28 15:26:35,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:26:35,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923587549] [2020-10-28 15:26:35,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:26:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:36,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:36,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:36,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:36,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:36,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 15:26:36,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:26:36,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-28 15:26:36,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:36,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:26:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 15:26:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 15:26:36,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:36,713 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 15:26:36,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:26:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:36,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:36,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:36,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:36,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:36,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:26:36,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:36,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:36,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:36,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:26:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:36,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:36,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:36,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:36,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:36,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:26:36,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:36,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:36,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:36,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 15:26:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:36,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:36,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:36,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:26:36,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:36,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:26:36,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:36,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:36,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:36,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:26:36,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:36,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:36,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 15:26:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:36,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:36,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:36,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 15:26:36,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:36,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 15:26:36,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:36,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:36,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:26:36,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:26:36,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 15:26:36,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:36,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-28 15:26:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:36,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:36,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:36,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 15:26:36,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:36,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 15:26:36,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:36,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:36,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:26:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:26:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 15:26:36,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:36,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 15:26:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:36,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:36,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:36,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 15:26:36,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:36,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:26:36,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:36,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:36,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:26:36,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 15:26:36,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:26:36,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:36,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 15:26:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:26:36,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:26:36,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:26:36,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:26:36,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:26:36,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 15:26:36,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:26:36,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:26:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:26:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 15:26:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:26:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:26:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:26:37,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923587549] [2020-10-28 15:26:37,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:26:37,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 15:26:37,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640544502] [2020-10-28 15:26:37,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 15:26:37,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:26:37,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 15:26:37,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:26:37,006 INFO L87 Difference]: Start difference. First operand 865 states and 1150 transitions. Second operand 11 states.